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Question Number 196185 by cortano12 last updated on 19/Aug/23

$$\:\:\:\underbrace{\:} \\ $$

Answered by horsebrand11 last updated on 19/Aug/23

 ⇒x^2  = y^((2b)/a)  and z=y^(b/c)     then y^((2b)/a)  = y^(1+(b/c))     ((2b)/a) = ((b+c)/c)⇒ ab+ca = 2bc   so ((ab+bc+ca)/(bc)) = ((3bc)/(bc)) = 3

$$\:\Rightarrow\mathrm{x}^{\mathrm{2}} \:=\:\mathrm{y}^{\frac{\mathrm{2b}}{\mathrm{a}}} \:\mathrm{and}\:\mathrm{z}=\mathrm{y}^{\frac{\mathrm{b}}{\mathrm{c}}} \\ $$$$\:\:\mathrm{then}\:\mathrm{y}^{\frac{\mathrm{2b}}{\mathrm{a}}} \:=\:\mathrm{y}^{\mathrm{1}+\frac{\mathrm{b}}{\mathrm{c}}} \\ $$$$\:\:\frac{\mathrm{2b}}{\mathrm{a}}\:=\:\frac{\mathrm{b}+\mathrm{c}}{\mathrm{c}}\Rightarrow\:\mathrm{ab}+\mathrm{ca}\:=\:\mathrm{2bc} \\ $$$$\:\mathrm{so}\:\frac{\mathrm{ab}+\mathrm{bc}+\mathrm{ca}}{\mathrm{bc}}\:=\:\frac{\mathrm{3bc}}{\mathrm{bc}}\:=\:\mathrm{3} \\ $$

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